Audio Database

　　
  • AS-2
  • AS-2

    ¥ 4,800 (around 1967?)



    Head amplifier with transistor configuration.

    Sensitivity 16 dB (6 x)
    Input impedance 100k Ω
    Bruit 3 μ V (Input Open)
    Distortion factor 0.2%(50mV)
    Output 200mV
    Semiconductor used 2SB348x4 Pieces
    Pwer 1.5 VDC with AA dry batteries
    External dimensions Width 95x Height 45x Depth 85 mm
    Weight 350g
  • AS-3
  • AS-3

    ¥ 4,800 (around 1965?)



    Booster transformer developed for MC cartridge.
    There are three variations of AS-3, with different boosting ratios and impedance ratios.

    Model Name AS-3-A AS-3-B AS-3-C
    Impedance ratio 6 Ω : 5k Ω 60 Ω : 60k Ω 60 Ω : 5k Ω
    Boost ratio About 30 About 35 About 10
    Applicable Example Orthofon FR-1 Satin M7
    External dimensions Width 95x Height 45x Depth 85 mm
  • 8020
  • 8020

    ¥ 43,000 (around 1980)



    A step-up transformer for MC cartridges has been improved by thorough examination of materials, manufacturing method and winding technology.

    Compatible Cartridge High impedance type such as EMT
    (20 Ω ~ 40 Ω)
    Boost ratio 1:10(20dB)
    Dedicated adapter AD8000(¥6,000)
  • 8025
  • 8025

    ¥ 43,000 (around 1981)



    Step-up transformer for MC cartridge

    Recommended primary impedance 3 Ω ~ 40 Ω
    Optimum second order impedance 47k Ω ~ 50k Ω
    Boost ratio 1:10.5(20.5dB)
    Frequency characteristic 15 Hz ~ 100 kHz (Within -1dB)
    Distortion factor Not more than 0.003%
    Separation 75 dB or More (1 kHz)
    Allowable input 70 mV (0.01% distortion rate, 1 kHz)
    Weight 100g
    Dedicated adapter AD8000(¥6,000)
  • 8030
  • 8030

    ¥ 43,000 (around 1980)



    MC step-up transformer for stereo equipment that brings together the transformer technology of LAX.
    An amplifier with socket such as 5C50 can be connected without a dedicated adapter.

    Compatible Cartridge Low impedance type such as orthophone
    (1.5 Ω ~ 3.5 Ω)
    Boost ratio 1:32(30dB)
    Dedicated adapter AD8000(¥6,000)
  • XA-1
  • XA-1

    ¥ 12,000 (around 1982)



    Demagnetizer for MC cartridge.
    Magnetization of coil bobbin of MC cartridge can be removed.
    However, MM and Print Coil MC (Victor MC-1, 101, Yamaha MC-1S/X) cannot be used.

    Applicable Cartridge Orthophone type MC
    Cartridge connector EIAJ Standard
    Indicator Power indicator
    Operating indicator
    Battery used S-006P(9V)
    External dimensions Width 120x Height 56x Depth 44 mm
    Weight 300g (including battery)
  • DP-3
  • DP-3

    ¥ 1,500 (around 1982)



    Disk pad for adsorption system.
    If the DP-3 is used in conjunction with the DP-3 and a record is held down from the top while the absorption action is performed, even a record with a large sled can be absorbed and played.

    * Included in PD555 and PD300.

  • SP-3
  • SP-3

    ¥ 2,000 (1 set, around 1982)



    Sealing pad set for PD300 and PD310.

  • PM-1
  • PM-1

    ¥ 4,000 (around 1980)



    A record sheet that improves sound quality when playing back records.

    Materials similar to chamois with a large coefficient of friction are used for the contact surface with the record.
    In addition, by molding special rubber that can absorb unwanted resonance to maximize the contact area with the record board, we prevent resonance of the turntable as well as resonance of the record board.

    Diameter 294mm
    Thickness 5mm
    Weight 370g
  • PM-2
  • PM-2

    ¥ 10,000 (around 1980)



    A record sheet that improves the sound quality of a record.

    In order to obtain the optimum hardness as a sheet, it uses a heavy material mixed with a filler by special combination.
    The surface has been specially processed to increase the effective contact area with the record.

    Diameter 294mm
    Thickness 4mm
    Weight 810g